Petrichor
Petrichor is a YC Fall 2026 (F26) company. Based in San Francisco, CA, USA. Team of 3.
About Petrichor
Summary
Petrichor Bio builds wet lab infrastructure that lets AI agents design and execute real biological experiments and collect empirical data. The platform serves AI-driven research workflows, replacing the need for human-operated lab processes to run iterative experimental cycles. By closing the loop between AI reasoning and physical biology, Petrichor Bio enables AI systems to learn from live experimental results rather than static datasets.
From the Y Combinator listing
Wet lab infrastructure that turns AI experiments into training data.
Real biology requires a wet lab, and building one takes years and a team most AI companies don't have. Petrichor runs their experiments at scale and sends back the dense, clean data their models need to learn from.
Facts
- B2B / B2B
- San Francisco, CA, USA
- 3
- Active
- Early
Founders (3)
- Elias Reinfeldt
- Jesper Johansson
Score every batch against your own thesis
GPAgent's sourcing agent reads every company in a batch, scores each one against your fund's thesis in a private workspace, and lines up the founders worth meeting before Demo Day. You decide who to contact. Your scores, notes, and pipeline never appear on these pages.
How Accelerator intelligence works